I've researched this and it looks like a lot of people with the same problem as me have replaced the current limiter on their SWG board.
A lot have used this part from Digikey with success, however an older thread on this website:
SL32 2R025 Ametherm | Circuit Protection | DigiKey
The one currently on my board has the numbers as32 2r025. It appears to be this one:
AS32 2R025 Ametherm | Circuit Protection | DigiKey
One is 2 OHM 20% and the other is 2 OHM 25%. I'm guessing I should use the 2nd one since the numbers match to the one currently on my board?
Any ideas if either would work...